Universal joint.



W. H. DOUGLAS. UNIVERSAL JOINT. APPLICATION FILED on. IS. 1911.

Patented Aprv WILLIAM H. DQUGLAS, 01E- EELLEVILLE, NEW JERSEY, ASSIGNORT0 KEELEY & I COMPANY, OF NEW YORK, N. 1., A CQRPORATION NEW YORK.

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manner.

Specification of Letters Patent.

Patented Apr. is, rare,

Application'filed October 16, 1911. Serial No. 654,995.

. To all whom it may concern:

Be it known that 1, WILLIAM H. DOUGLAS,

a citizen of the United States, and resident of Belleville, in thecounty of Essex and State of New Jersey, have invented a new and usefulImprovement inUniver'sal Joints, of which the following is aspecification.

The'object of this invention is to provide side elevation, Fig.2 is aview of the samein top plan, Fig. 3 is a cross section taken in theplane of the line lie-A. of Fig. 1, Fig. i is a longitudinal sectiontaken in the plane of the line B-B of Fig. 1, Fig. 5 is a plan view ofthe block member, Fig. 6 is a side view of the same, Fig. 7 is a planview of one yoke member, and Fig. 8 is a plan view of the other yokemember.

The universal joint consists of only three parts, viz; the yoke members1, 2, and interposed block member 3, so interlocked as to permit thetransmission of rotary movement from one yoke member to the other yokemember irrespective of the angular relation ship between the axes of thetwo yoke members within a limited degree.

The yoke member 1 is provided with a segmental yoke i. and the yokemember 2 with a segmental yoke 5, the inner faces of said yokes beingstepped, as shown at 6 and 7, respectively, for the purpose of insuringan extended bearing of the yokes in the block member 3. This blockmember 3 is provided with crossed surface grooves 8 and 9 which arepreferably cylindrical inform and are stepped, as shown at 10, 11, to receive the stepped portions of the segmental yokes.

The yoke members have a. free sliding movement in the'crossed surfacegrooves of the block member and the parts are herein shown with theyokes of the two members disposed at right angles to each other and thecrossed surface grooves in the interposed block member are disposed atright angles to each other.

The block member has a lubricant distributing chamber which is hereinshown asbeing formed by crossed holes 12, 13, leading diametricallythrough the block member and opening into the crossed surface grooves,When this chamber is filled with a suitable lubricant, it will furnishthe same to the joints between the yoke members and the interposed blockmember in sufficient quantities to insure aproper lubrication of thesame. 7

It will beseenthat by the provision of stepped yoke members and steppedcrossed grooves, an extended surface connection is provided between theyoke membersandinterposed block member.

A universal joint constructed and arranged substantially as herein setforth obviates the necessity of utilizing cross bolts or pins.Furthermore, the parts are compact and are so arranged as to permit arange of considerable .angularity between the axes-of the tvvii'lyokemembers without materatly, interfering with their transmission ability.The joint is also one which may be very readily assembled anddisassembled without the use of tools of any character.

1t is evident that various changes might be resorted to in the form,construction and arrangement of-the parts without departing from thespirit andscope of my invention; hence I do not wish to limit myselfstrictly 'to the structure herein set forth, but

grooves, and two inwardly stepped yoke members adapted to coact withsaid grooves, each member being removably held in sliding engagementwith its two concentric grooves of the block member.

In testimony, that I claim the foregoing as my invention, 1 have signedmy name 1n presence of two Witnesses, this 9th day ,of October, 1911.

WILLIAM H, nonenas.

Witnesses:

F. GEORGE BARRY, v OTTO W. HOLMGREN.

